/**
 * @file lv_btn.c
 *
 */

/*********************
 *      INCLUDES
 *********************/

#include "lv_btn.h"
#if USE_LV_BTN != 0

#include "../lv_core/lv_group.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_misc/lv_area.h"
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_math.h"
#include "../lv_themes/lv_theme.h"
#include <Library/minstring.h>

/*********************
 *      DEFINES
 *********************/
#define LV_BTN_INK_VALUE_MAX 256
#define LV_BTN_INK_VALUE_MAX_SHIFT 8

/**********************
 *      TYPEDEFS
 **********************/

/**********************
 *  STATIC PROTOTYPES
 **********************/
static bool
                lv_btn_design(lv_obj_t *ddlist, const lv_area_t *mask, lv_design_mode_t mode);
static lv_res_t lv_btn_signal(lv_obj_t *btn, lv_signal_t sign, void *param);

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
static void lv_btn_ink_effect_anim(lv_obj_t *btn, int32_t val);
static void lv_btn_ink_effect_anim_ready(void *p);
#endif

/**********************
 *  STATIC VARIABLES
 **********************/
static lv_signal_func_t ancestor_signal;
static lv_design_func_t ancestor_design;

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
static lv_coord_t     ink_act_value;
static lv_obj_t *     ink_obj;
static lv_btn_state_t ink_bg_state;
static lv_btn_state_t ink_top_state;
static bool           ink_ready;
static bool           ink_playback;
static lv_point_t     ink_point;
#endif

/**********************
 *      MACROS
 **********************/

/**********************
 *   GLOBAL FUNCTIONS
 **********************/

/**
 * Create a button objects
 * @param par pointer to an object, it will be the parent of the new button
 * @param copy pointer to a button object, if not NULL then the new object will
 * be copied from it
 * @return pointer to the created button
 */
lv_obj_t *lv_btn_create(lv_obj_t *par, const lv_obj_t *copy)
{
  LV_LOG_TRACE("button create started");

  lv_obj_t *new_btn;

  new_btn = lv_cont_create(par, copy);
  lv_mem_assert(new_btn);
  if (new_btn == NULL)
    return NULL;

  if (ancestor_signal == NULL)
    ancestor_signal = lv_obj_get_signal_func(new_btn);
  if (ancestor_design == NULL)
    ancestor_design = lv_obj_get_design_func(new_btn);

  /*Allocate the extended data*/
  lv_btn_ext_t *ext = lv_obj_allocate_ext_attr(new_btn, sizeof(lv_btn_ext_t));
  lv_mem_assert(ext);
  if (ext == NULL)
    return NULL;

  ext->state = LV_BTN_STATE_REL;

  ext->actions[LV_BTN_ACTION_PR]             = NULL;
  ext->actions[LV_BTN_ACTION_CLICK]          = NULL;
  ext->actions[LV_BTN_ACTION_LONG_PR]        = NULL;
  ext->actions[LV_BTN_ACTION_LONG_PR_REPEAT] = NULL;

  ext->styles[LV_BTN_STATE_REL]     = &lv_style_btn_rel;
  ext->styles[LV_BTN_STATE_PR]      = &lv_style_btn_pr;
  ext->styles[LV_BTN_STATE_TGL_REL] = &lv_style_btn_tgl_rel;
  ext->styles[LV_BTN_STATE_TGL_PR]  = &lv_style_btn_tgl_pr;
  ext->styles[LV_BTN_STATE_INA]     = &lv_style_btn_ina;

  ext->long_pr_action_executed = 0;
  ext->toggle                  = 0;
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  ext->ink_in_time   = 0;
  ext->ink_wait_time = 0;
  ext->ink_out_time  = 0;
#endif

  lv_obj_set_signal_func(new_btn, lv_btn_signal);
  lv_obj_set_design_func(new_btn, lv_btn_design);

  /*If no copy do the basic initialization*/
  if (copy == NULL) {
    /*Set layout if the button is not a screen*/
    if (par != NULL) {
      lv_btn_set_layout(new_btn, LV_LAYOUT_CENTER);
    }

    lv_obj_set_click(new_btn, true); /*Be sure the button is clickable*/

    /*Set the default styles*/
    lv_theme_t *th = lv_theme_get_current();
    if (th) {
      lv_btn_set_style(new_btn, LV_BTN_STYLE_REL, th->btn.rel);
      lv_btn_set_style(new_btn, LV_BTN_STYLE_PR, th->btn.pr);
      lv_btn_set_style(new_btn, LV_BTN_STYLE_TGL_REL, th->btn.tgl_rel);
      lv_btn_set_style(new_btn, LV_BTN_STYLE_TGL_PR, th->btn.tgl_pr);
      lv_btn_set_style(new_btn, LV_BTN_STYLE_INA, th->btn.ina);
    }
    else {
      lv_obj_set_style(new_btn, ext->styles[LV_BTN_STATE_REL]);
    }
  }
  /*Copy 'copy'*/
  else {
    lv_btn_ext_t *copy_ext = lv_obj_get_ext_attr(copy);
    ext->state             = copy_ext->state;
    ext->toggle            = copy_ext->toggle;
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
    ext->ink_in_time   = copy_ext->ink_in_time;
    ext->ink_wait_time = copy_ext->ink_wait_time;
    ext->ink_out_time  = copy_ext->ink_out_time;
#endif
    memcpy(ext->actions, copy_ext->actions, sizeof(ext->actions));
    memcpy(ext->styles, copy_ext->styles, sizeof(ext->styles));

    /*Refresh the style with new signal function*/
    lv_obj_refresh_style(new_btn);
  }

  LV_LOG_INFO("button created");

  return new_btn;
}

/*=====================
 * Setter functions
 *====================*/

/**
 * Enable the toggled states
 * @param btn pointer to a button object
 * @param tgl true: enable toggled states, false: disable
 */
void lv_btn_set_toggle(lv_obj_t *btn, bool tgl)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);

  ext->toggle = tgl != false ? 1 : 0;
}

/**
 * Set the state of the button
 * @param btn pointer to a button object
 * @param state the new state of the button (from lv_btn_state_t enum)
 */
void lv_btn_set_state(lv_obj_t *btn, lv_btn_state_t state)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  if (ext->state != state) {
    ext->state = state;
    lv_obj_set_style(btn, ext->styles[state]);
  }
}

/**
 * Toggle the state of the button (ON->OFF, OFF->ON)
 * @param btn pointer to a button object
 */
void lv_btn_toggle(lv_obj_t *btn)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  switch (ext->state) {
  case LV_BTN_STATE_REL:
    lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
    break;
  case LV_BTN_STATE_PR:
    lv_btn_set_state(btn, LV_BTN_STATE_TGL_PR);
    break;
  case LV_BTN_STATE_TGL_REL:
    lv_btn_set_state(btn, LV_BTN_STATE_REL);
    break;
  case LV_BTN_STATE_TGL_PR:
    lv_btn_set_state(btn, LV_BTN_STATE_PR);
    break;
  default:
    break;
  }
}

/**
 * Set a function to call when a button event happens
 * @param btn pointer to a button object
 * @param action type of event form 'lv_action_t' (press, release, long press,
 * long press repeat)
 */
void lv_btn_set_action(lv_obj_t *btn, lv_btn_action_t type, lv_action_t action)
{
  if (type >= LV_BTN_ACTION_NUM)
    return;

  lv_btn_ext_t *ext  = lv_obj_get_ext_attr(btn);
  ext->actions[type] = action;
}

/**
 * Set time of the ink effect (draw a circle on click to animate in the new
 * state)
 * @param btn pointer to a button object
 * @param time the time of the ink animation
 */
void lv_btn_set_ink_in_time(lv_obj_t *btn, uint16_t time)
{
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  ext->ink_in_time  = time;
#else
  (void)btn;  /*Unused*/
  (void)time; /*Unused*/
  LV_LOG_WARN("`lv_btn_set_ink_ink_time` has no effect if LV_BTN_INK_EFEFCT or "
              "USE_LV_ANIMATION is disabled")
#endif
}

/**
 * Set the wait time before the ink disappears
 * @param btn pointer to a button object
 * @param time the time of the ink animation
 */
void lv_btn_set_ink_wait_time(lv_obj_t *btn, uint16_t time)
{

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext  = lv_obj_get_ext_attr(btn);
  ext->ink_wait_time = time;
#else
  (void)btn;  /*Unused*/
  (void)time; /*Unused*/
  LV_LOG_WARN("`lv_btn_set_ink_wait_time` has no effect if LV_BTN_INK_EFEFCT "
              "or USE_LV_ANIMATION is disabled")
#endif
}

/**
 * Set time of the ink out effect (animate to the released state)
 * @param btn pointer to a button object
 * @param time the time of the ink animation
 */
void lv_btn_set_ink_out_time(lv_obj_t *btn, uint16_t time)
{
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  ext->ink_out_time = time;
#else
  (void)btn;  /*Unused*/
  (void)time; /*Unused*/
  LV_LOG_WARN("`lv_btn_set_ink_out_time` has no effect if LV_BTN_INK_EFEFCT or "
              "USE_LV_ANIMATION is disabled")
#endif
}

/**
 * Set a style of a button
 * @param btn pointer to a button object
 * @param type which style should be set
 * @param style pointer to a style
 */
void lv_btn_set_style(lv_obj_t *btn, lv_btn_style_t type, lv_style_t *style)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);

  switch (type) {
  case LV_BTN_STYLE_REL:
    ext->styles[LV_BTN_STATE_REL] = style;
    break;
  case LV_BTN_STYLE_PR:
    ext->styles[LV_BTN_STATE_PR] = style;
    break;
  case LV_BTN_STYLE_TGL_REL:
    ext->styles[LV_BTN_STATE_TGL_REL] = style;
    break;
  case LV_BTN_STYLE_TGL_PR:
    ext->styles[LV_BTN_STATE_TGL_PR] = style;
    break;
  case LV_BTN_STYLE_INA:
    ext->styles[LV_BTN_STATE_INA] = style;
    break;
  }

  /*Refresh the object with the new style*/
  lv_obj_set_style(btn, ext->styles[ext->state]);
}

/*=====================
 * Getter functions
 *====================*/

/**
 * Get the current state of the button
 * @param btn pointer to a button object
 * @return the state of the button (from lv_btn_state_t enum)
 */
lv_btn_state_t lv_btn_get_state(const lv_obj_t *btn)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  return ext->state;
}

/**
 * Get the toggle enable attribute of the button
 * @param btn pointer to a button object
 * @return ture: toggle enabled, false: disabled
 */
bool lv_btn_get_toggle(const lv_obj_t *btn)
{
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);

  return ext->toggle != 0 ? true : false;
}

/**
 * Get the release action of a button
 * @param btn pointer to a button object
 * @return pointer to the release action function
 */
lv_action_t lv_btn_get_action(const lv_obj_t *btn, lv_btn_action_t type)
{
  if (type >= LV_BTN_ACTION_NUM)
    return NULL;

  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  return ext->actions[type];
}

/**
 * Get time of the ink in effect (draw a circle on click to animate in the new
 * state)
 * @param btn pointer to a button object
 * @return the time of the ink animation
 */
uint16_t lv_btn_get_ink_in_time(const lv_obj_t *btn)
{
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  return ext->ink_in_time;
#else
  (void)btn; /*Unused*/
  return 0;
#endif
}

/**
 * Get the wait time before the ink disappears
 * @param btn pointer to a button object
 * @return the time of the ink animation
 */
uint16_t lv_btn_get_ink_wait_time(const lv_obj_t *btn)
{
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  return ext->ink_wait_time;
#else
  (void)btn; /*Unused*/
  return 0;
#endif
}
/**
 * Get time of the ink out effect (animate to the releases state)
 * @param btn pointer to a button object
 * @return the time of the ink animation
 */
uint16_t lv_btn_get_ink_out_time(const lv_obj_t *btn)
{
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
  lv_btn_ext_t *ext = lv_obj_get_ext_attr(btn);
  return ext->ink_in_time;
#else
  (void)btn; /*Unused*/
  return 0;
#endif
}

/**
 * Get a style of a button
 * @param btn pointer to a button object
 * @param type which style should be get
 * @return style pointer to a style
 */
lv_style_t *lv_btn_get_style(const lv_obj_t *btn, lv_btn_style_t type)
{
  lv_style_t *  style = NULL;
  lv_btn_ext_t *ext   = lv_obj_get_ext_attr(btn);

  switch (type) {
  case LV_BTN_STYLE_REL:
    style = ext->styles[LV_BTN_STATE_REL];
    break;
  case LV_BTN_STYLE_PR:
    style = ext->styles[LV_BTN_STATE_PR];
    break;
  case LV_BTN_STYLE_TGL_REL:
    style = ext->styles[LV_BTN_STATE_TGL_REL];
    break;
  case LV_BTN_STYLE_TGL_PR:
    style = ext->styles[LV_BTN_STATE_TGL_PR];
    break;
  case LV_BTN_STYLE_INA:
    style = ext->styles[LV_BTN_STATE_INA];
    break;
  default:
    style = NULL;
    break;
  }

  return style;
}

/**********************
 *   STATIC FUNCTIONS
 **********************/

/**
 * Handle the drawing related tasks of the drop down lists
 * @param btn pointer to an object
 * @param mask the object will be drawn only in this area
 * @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the
 * 'mask_p' area (return 'true' if yes) LV_DESIGN_DRAW: draw the object (always
 * return 'true') LV_DESIGN_DRAW_POST: drawing after every children are drawn
 * @param return true/false, depends on 'mode'
 */
static bool
lv_btn_design(lv_obj_t *btn, const lv_area_t *mask, lv_design_mode_t mode)
{
  if (mode == LV_DESIGN_COVER_CHK) {
    return false;
  }
  else if (mode == LV_DESIGN_DRAW_MAIN) {

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
    if (btn != ink_obj) {
      ancestor_design(btn, mask, mode);
    }
    else {
      lv_opa_t      opa_scale = lv_obj_get_opa_scale(btn);
      lv_btn_ext_t *ext       = lv_obj_get_ext_attr(btn);

      /*Draw the normal button*/
      if (ink_playback == false) {
        lv_style_t style_tmp;
        lv_style_copy(&style_tmp, ext->styles[ink_bg_state]);
        style_tmp.body.shadow.width =
            ext->styles[ink_top_state]->body.shadow.width;
        lv_draw_rect(&btn->coords, mask, &style_tmp, opa_scale);

        lv_coord_t w     = lv_obj_get_width(btn);
        lv_coord_t h     = lv_obj_get_height(btn);
        lv_coord_t r_max = LV_MATH_MIN(w, h) / 2;

        /*In the first part of the animation increase the size of the circle
         * (ink effect) */
        lv_area_t cir_area;

        lv_coord_t coord_state = ink_act_value < LV_BTN_INK_VALUE_MAX / 2
                                     ? ink_act_value
                                     : LV_BTN_INK_VALUE_MAX / 2;
        lv_point_t p_act;
        p_act.x          = ink_point.x;
        p_act.y          = ink_point.y;
        lv_coord_t x_err = (btn->coords.x1 + w / 2) - p_act.x;
        lv_coord_t y_err = (btn->coords.y1 + h / 2) - p_act.y;

        p_act.x += (x_err * coord_state) >> (LV_BTN_INK_VALUE_MAX_SHIFT - 1);
        p_act.y += (y_err * coord_state) >> (LV_BTN_INK_VALUE_MAX_SHIFT - 1);

        lv_coord_t half_side = LV_MATH_MAX(w, h) / 2;
        cir_area.x1          = p_act.x - ((half_side * coord_state) >>
                                 (LV_BTN_INK_VALUE_MAX_SHIFT - 1));
        cir_area.y1          = p_act.y - ((half_side * coord_state) >>
                                 (LV_BTN_INK_VALUE_MAX_SHIFT - 1));
        cir_area.x2          = p_act.x + ((half_side * coord_state) >>
                                 (LV_BTN_INK_VALUE_MAX_SHIFT - 1));
        cir_area.y2          = p_act.y + ((half_side * coord_state) >>
                                 (LV_BTN_INK_VALUE_MAX_SHIFT - 1));

        lv_area_intersect(
            &cir_area, &btn->coords,
            &cir_area); /*Limit the area. (It might be too big on the smaller
                           side)*/

        /*In the second part animate the radius. Circle -> body.radius*/
        lv_coord_t r_state = ink_act_value > LV_BTN_INK_VALUE_MAX / 2
                                 ? ink_act_value - LV_BTN_INK_VALUE_MAX / 2
                                 : 0;

        lv_style_copy(&style_tmp, ext->styles[ink_top_state]);
        style_tmp.body.radius =
            r_max +
            (((ext->styles[ink_bg_state]->body.radius - r_max) * r_state) >>
             (LV_BTN_INK_VALUE_MAX_SHIFT - 1));
        style_tmp.body.border.width = 0;

        /*Draw the circle*/
        lv_draw_rect(&cir_area, mask, &style_tmp, opa_scale);
      }
      else {
        lv_style_t res;
        lv_style_copy(&res, ext->styles[ink_bg_state]);
        lv_style_mix(
            ext->styles[ink_bg_state], ext->styles[ink_top_state], &res,
            ink_act_value);
        lv_draw_rect(&btn->coords, mask, &res, opa_scale);
      }
    }
#else
    ancestor_design(btn, mask, mode);
#endif
  }
  else if (mode == LV_DESIGN_DRAW_POST) {
    ancestor_design(btn, mask, mode);
  }

  return true;
}

/**
 * Signal function of the button
 * @param btn pointer to a button object
 * @param sign a signal type from lv_signal_t enum
 * @param param pointer to a signal specific variable
 * @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the
 * object is deleted
 */
static lv_res_t lv_btn_signal(lv_obj_t *btn, lv_signal_t sign, void *param)
{
  lv_res_t res;

  /* Include the ancient signal function */
  res = ancestor_signal(btn, sign, param);
  if (res != LV_RES_OK)
    return res;

  lv_btn_ext_t * ext   = lv_obj_get_ext_attr(btn);
  lv_btn_state_t state = lv_btn_get_state(btn);
  bool           tgl   = lv_btn_get_toggle(btn);

  if (sign == LV_SIGNAL_PRESSED) {
    /*Refresh the state*/
    if (ext->state == LV_BTN_STATE_REL) {
      lv_btn_set_state(btn, LV_BTN_STATE_PR);
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
      ink_bg_state  = LV_BTN_STATE_REL;
      ink_top_state = LV_BTN_STATE_PR;
#endif
    }
    else if (ext->state == LV_BTN_STATE_TGL_REL) {
      lv_btn_set_state(btn, LV_BTN_STATE_TGL_PR);
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
      ink_bg_state  = LV_BTN_STATE_TGL_REL;
      ink_top_state = LV_BTN_STATE_TGL_PR;
#endif
    }

    ext->long_pr_action_executed = 0;

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
    /*Forget the old inked button*/
    if (ink_obj != NULL && ink_obj != btn) {
      lv_anim_del(ink_obj, (lv_anim_fp_t)lv_btn_ink_effect_anim);
      lv_obj_invalidate(ink_obj);
      ink_obj = NULL;
    }
    /*Save the new data for inking and start it's animation if enabled*/
    if (ext->ink_in_time > 0) {
      ink_obj      = btn;
      ink_playback = false;
      ink_ready    = false;
      lv_indev_get_point(lv_indev_get_act(), &ink_point);

      lv_anim_t a;
      a.var            = btn;
      a.start          = 0;
      a.end            = LV_BTN_INK_VALUE_MAX;
      a.fp             = (lv_anim_fp_t)lv_btn_ink_effect_anim;
      a.path           = lv_anim_path_linear;
      a.end_cb         = lv_btn_ink_effect_anim_ready;
      a.act_time       = 0;
      a.time           = ext->ink_in_time;
      a.playback       = 0;
      a.playback_pause = 0;
      a.repeat         = 0;
      a.repeat_pause   = 0;
      lv_anim_create(&a);
    }
#endif
    /*Call the press action, 'param' is the caller indev_proc*/
    if (ext->actions[LV_BTN_ACTION_PR] && state != LV_BTN_STATE_INA) {
      res = ext->actions[LV_BTN_ACTION_PR](btn);
    }
  }
  else if (sign == LV_SIGNAL_PRESS_LOST) {
    /*Refresh the state*/
    if (ext->state == LV_BTN_STATE_PR)
      lv_btn_set_state(btn, LV_BTN_STATE_REL);
    else if (ext->state == LV_BTN_STATE_TGL_PR)
      lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
  }
  else if (sign == LV_SIGNAL_PRESSING) {
    /*When the button begins to drag revert pressed states to released*/
    if (lv_indev_is_dragging(param) != false) {
      if (ext->state == LV_BTN_STATE_PR)
        lv_btn_set_state(btn, LV_BTN_STATE_REL);
      else if (ext->state == LV_BTN_STATE_TGL_PR)
        lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
    }
  }
  else if (sign == LV_SIGNAL_RELEASED) {
    /*If not dragged and it was not long press action then
     *change state and run the action*/
    if (lv_indev_is_dragging(param) == false &&
        ext->long_pr_action_executed == 0) {
      if (ext->state == LV_BTN_STATE_PR && tgl == false) {
        lv_btn_set_state(btn, LV_BTN_STATE_REL);
      }
      else if (ext->state == LV_BTN_STATE_TGL_PR && tgl == false) {
        lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
      }
      else if (ext->state == LV_BTN_STATE_PR && tgl == true) {
        lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
      }
      else if (ext->state == LV_BTN_STATE_TGL_PR && tgl == true) {
        lv_btn_set_state(btn, LV_BTN_STATE_REL);
      }

      if (ext->actions[LV_BTN_ACTION_CLICK] && state != LV_BTN_STATE_INA) {
        res = ext->actions[LV_BTN_ACTION_CLICK](btn);
      }
    }
    else { /*If dragged change back the state*/
      if (ext->state == LV_BTN_STATE_PR) {
        lv_btn_set_state(btn, LV_BTN_STATE_REL);
      }
      else if (ext->state == LV_BTN_STATE_TGL_PR) {
        lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
      }
    }

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
    /*Draw the toggled state in the inking instead*/
    if (ext->toggle) {
      ink_top_state = ext->state;
    }
    /*If not a toggle button and the "IN" inking is ready then start an "OUT"
     * inking*/
    else if (ink_ready && ext->ink_out_time > 0) {
      ink_obj = btn;
      ink_playback =
          true; /*It is the playback. If not set `lv_btn_ink_effect_anim_ready`
                   will start its own playback*/
      lv_indev_get_point(lv_indev_get_act(), &ink_point);

      lv_anim_t a;
      a.var            = ink_obj;
      a.start          = LV_BTN_INK_VALUE_MAX;
      a.end            = 0;
      a.fp             = (lv_anim_fp_t)lv_btn_ink_effect_anim;
      a.path           = lv_anim_path_linear;
      a.end_cb         = lv_btn_ink_effect_anim_ready;
      a.act_time       = 0;
      a.time           = ext->ink_out_time;
      a.playback       = 0;
      a.playback_pause = 0;
      a.repeat         = 0;
      a.repeat_pause   = 0;
      lv_anim_create(&a);
    }
#endif
  }
  else if (sign == LV_SIGNAL_LONG_PRESS) {
    if (ext->actions[LV_BTN_ACTION_LONG_PR] && state != LV_BTN_STATE_INA) {
      ext->long_pr_action_executed = 1;
      res                          = ext->actions[LV_BTN_ACTION_LONG_PR](btn);
    }
  }
  else if (sign == LV_SIGNAL_LONG_PRESS_REP) {
    if (ext->actions[LV_BTN_ACTION_LONG_PR_REPEAT] &&
        state != LV_BTN_STATE_INA) {
      res = ext->actions[LV_BTN_ACTION_LONG_PR_REPEAT](btn);
    }
  }
  else if (sign == LV_SIGNAL_CONTROLL) {
    char c = *((char *)param);
    if (c == LV_GROUP_KEY_RIGHT || c == LV_GROUP_KEY_UP) {
      if (lv_btn_get_toggle(btn) != false)
        lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
      if (ext->actions[LV_BTN_ACTION_CLICK] &&
          lv_btn_get_state(btn) != LV_BTN_STATE_INA) {
        res = ext->actions[LV_BTN_ACTION_CLICK](btn);
      }
    }
    else if (c == LV_GROUP_KEY_LEFT || c == LV_GROUP_KEY_DOWN) {
      if (lv_btn_get_toggle(btn) != false)
        lv_btn_set_state(btn, LV_BTN_STATE_REL);
      if (ext->actions[LV_BTN_ACTION_CLICK] &&
          lv_btn_get_state(btn) != LV_BTN_STATE_INA) {
        res = ext->actions[LV_BTN_ACTION_CLICK](btn);
      }
    }
    else if (c == LV_GROUP_KEY_ENTER) {
      if (!ext->long_pr_action_executed) {
        if (lv_btn_get_toggle(btn)) {
          if (state == LV_BTN_STATE_REL)
            lv_btn_set_state(btn, LV_BTN_STATE_TGL_REL);
          else if (state == LV_BTN_STATE_PR)
            lv_btn_set_state(btn, LV_BTN_STATE_TGL_PR);
          else if (state == LV_BTN_STATE_TGL_REL)
            lv_btn_set_state(btn, LV_BTN_STATE_REL);
          else if (state == LV_BTN_STATE_TGL_PR)
            lv_btn_set_state(btn, LV_BTN_STATE_PR);
        }
        if (ext->actions[LV_BTN_ACTION_CLICK] && state != LV_BTN_STATE_INA) {
          res = ext->actions[LV_BTN_ACTION_CLICK](btn);
        }
      }
      ext->long_pr_action_executed = 0;
    }
  }
  else if (sign == LV_SIGNAL_CLEANUP) {
#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT
    if (btn == ink_obj) {
      lv_anim_del(ink_obj, (lv_anim_fp_t)lv_btn_ink_effect_anim);
      ink_obj = NULL;
    }
#endif
  }
  else if (sign == LV_SIGNAL_GET_TYPE) {
    lv_obj_type_t *buf = param;
    uint8_t        i;
    for (i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
      if (buf->type[i] == NULL)
        break;
    }
    buf->type[i] = "lv_btn";
  }

  return res;
}

#if USE_LV_ANIMATION && LV_BTN_INK_EFFECT

/**
 * The animator function of inking. CAlled to increase the radius of ink
 * @param btn pointer to the animated button
 * @param val the new radius
 */
static void lv_btn_ink_effect_anim(lv_obj_t *btn, int32_t val)
{
  if (btn) {
    ink_act_value = val;
    lv_obj_invalidate(btn);
  }
}

/**
 * Called to clean up when the ink animation is ready
 * @param p unused
 */
static void lv_btn_ink_effect_anim_ready(void *p)
{
  (void)p; /*Unused*/

  lv_btn_ext_t * ext   = lv_obj_get_ext_attr(ink_obj);
  lv_btn_state_t state = lv_btn_get_state(ink_obj);

  lv_obj_invalidate(ink_obj);
  ink_ready = true;

  if ((state == LV_BTN_STATE_REL || state == LV_BTN_STATE_TGL_REL) &&
      ext->toggle == 0 && ink_playback == false) {
    lv_anim_t a;
    a.var            = ink_obj;
    a.start          = LV_BTN_INK_VALUE_MAX;
    a.end            = 0;
    a.fp             = (lv_anim_fp_t)lv_btn_ink_effect_anim;
    a.path           = lv_anim_path_linear;
    a.end_cb         = lv_btn_ink_effect_anim_ready;
    a.act_time       = -ext->ink_wait_time;
    a.time           = ext->ink_out_time;
    a.playback       = 0;
    a.playback_pause = 0;
    a.repeat         = 0;
    a.repeat_pause   = 0;
    lv_anim_create(&a);

    ink_playback = true;
  }
  else {
    ink_obj = NULL;
  }
}
#endif /*USE_LV_ANIMATION*/

#endif
